Area data
Atherton, CA — ZIP 94027
Population: 7,002 (Census ACS)
The median home value in ZIP 94027 (Atherton, CA) is $8.66M — up 14.0% over the past year. Homes sell for a median $10.50M after a median 19 days on market. Typical rent runs $15,500/month. 4 schools serve the area (NCES). FEMA's National Risk Index rates the county's overall natural-hazard risk Relatively High, with coastalflooding, drought, earthquake the top-rated hazards. Cost of living is 13.3% above the US average (BEA, metro/state-level).
$8.66M
Median home value
+14.0%
1-year change
19
Median days on market
Relatively High
Hazard risk (county)
Home values & appreciation
- Median home value
- $8.66M
- 1-year appreciation
- +14.0%
- 3-year appreciation
- +15.9%
- 5-year appreciation
- +22.9%
- 10-year appreciation
- +57.3%
- All-time peak (2026-07)
- $8.66M
- House Price Index (state)
- 417.4 (-0.8% YoY)
Sources: home value index (ZIP-level) · FHFA House Price Index (state-level)
Market activity
- Median sale price
- $10.50M
- Median list price
- $10.50M
- Median price per sqft
- $2,200
- 1-year sale-price change
- +21.9%
- Median days on market
- 19 days
- Homes sold (recent period)
- 29
- For-sale inventory
- 6
- Sale-to-list ratio
- 101.1%
- Active listings
- 13
- 1-year forecast
- +0.6%
Source: recent area sales and market data (ZIP-level)
Rents
- Typical rent
- $15,500/mo
- Studio fair-market rent
- $1,495/mo
- 1BR fair-market rent
- $1,869/mo
- 2BR fair-market rent
- $2,330/mo
- 3BR fair-market rent
- $3,029/mo
- 4BR fair-market rent
- $3,495/mo
Sources: market rent index (ZIP-level) · HUD Fair Market Rents (metro/county-level, 40th-percentile regulatory reference)
Affordability
- Cost of living index (High)
- 113.3 (100 = US avg)
- Electricity rate (state-level)
- 32.5¢/kWh
- Natural gas rate (state-level)
- $22.00/MCF
- 30-year mortgage rate (national)
- 6.66%
- 15-year mortgage rate (national)
- 6.00%
Sources: BEA Regional Price Parities (metro/state-level) · EIA energy rates (state-level) · Freddie Mac PMMS (national)
Schools
- Total schools
- 4
- Elementary schools
- 4
- Middle schools
- 0
- High schools
- 0
- School districts serving the area
- Las Lomitas Elementary, Menlo Park City Elementary, Redwood City Elementary
- Schools include
- Las Lomitas Elementary, Encinal Elementary, Laurel Elementary, Adelante Selby Spanish Immersion
Source: NCES school directory, 2022-23 (school-address-based)
Natural hazards & flood risk
- Overall hazard risk (county)
- Relatively High
- Top hazards (county)
- coastalFlooding, drought, earthquake, inlandFlooding, landslide
- Notable hazard ratings (county)
- coastalFlooding: Relatively High · drought: Relatively High · earthquake: Relatively High · heatWave: Relatively Moderate · inlandFlooding: Relatively High · landslide: Relatively High
- FEMA flood zone
- A14
- Flood risk level
- High
- Wildfire risk to homes (county)
- Higher than 72% of US counties
- Buildings in wildfire direct-exposure zone
- 12.7%
- Radon potential (county)
- Moderate radon potential — EPA Zone 2 of 3
- EPA Superfund (NPL) sites within 5 mi
- 1
- Nearest Superfund site
- Hewlett-Packard (620-640 Page Mill Road) (4 mi)
Sources: FEMA National Risk Index (county-level) · FEMA flood data (ZIP-level) · USDA Forest Service Wildfire Risk to Communities (county-level) · EPA radon zones + Superfund NPL
Climate (30-year normals)
- Average annual temperature
- 60.0°F
- Average high
- 71.0°F
- Average low
- 49.0°F
- Annual precipitation
- 15.7 in
- USDA plant hardiness zone
- 9b (extreme annual low 25 to 30°F)
Sources: NOAA Climate Normals (30-year, nearest-station) · USDA Plant Hardiness Zone Map (2023)
Air quality
- Air quality rating
- Good
- Median AQI (annual)
- 31
- Days with Good air quality
- 355
- Days with Moderate air quality
- 8
- Highest AQI recorded (year)
- 71
Source: EPA air quality data (nearest monitoring station, annual)
Walkability & transit
- Walkability index
- 8.2 / 20
- Transit service frequency
- -99,999
- Jobs reachable by car (30 min)
- 94,775
- Jobs reachable by transit (45 min)
- 66,886
Source: EPA Smart Location Database (metropolitan block groups)
Amenities
- National parks within ~60 mi
- 11
- Nearest national park
- San Francisco Maritime National Historical Park (27 mi)
- National parks include
- San Francisco Maritime National Historical Park, Eugene O'Neill National Historic Site, Presidio of San Francisco
- Airports within 30 mi
- 13
- Nearest airport
- San Carlos Airport (SQL) (5 mi)
- Nearest major airport
- San Carlos Airport (SQL) (5 mi)
- Hospitals nearby (~15 mi)
- 19
- Hospitals include
- ST ROSE HOSPITAL, PENINSULA MEDICAL CENTER, SANTA CLARA VALLEY MEDICAL CENTER
- Avg hospital rating (CMS)
- 3.5 / 5
- Best hospital rating nearby (CMS)
- 5.0 / 5
- EV charging stations (within 10 mi)
- 105
- Solar radiation rating
- Good (5.1 kWh/m²/day)
Sources: National Park Service · FAA airport data · CMS hospital data · DOE/NREL (proximity-based)
Migration
- Net migration (county)
- -4,745 tax filers
Source: IRS county-to-county migration data (county-level, ~12-month lag)
Housing stock
- Median year housing built
- 1,960
- Housing built before 1970
- 58.9%
- Housing built 2000 or later
- 27.2%
- Median annual property tax
- $10,001
- Mean commute to work
- 14 min
- Households with broadband internet
- 90.5%
Source: Census ACS 5-year estimates (ZIP-level)
Employment & development
- Total county employment
- 390,970
- Average weekly wage
- $3,458
- Top industries (by employment)
- Professional Services, Information, Health Care
- Annual residential building permits (county)
- 482
Sources: BLS QCEW (county-level) · Census Building Permits (county-level)
How it compares
| ZIP 94027 | State median | US median | |
|---|---|---|---|
| Median home value | $8.66M | $702,573 | $289,727 |
| Median sale price | $10.50M | $696,000 | $325,000 |
| Median days on market | 19 days | 39 days | 51 days |
| Typical rent | $15,500/mo | $2,767/mo | $1,808/mo |
| Median annual property tax | $10,001 | $4,533 | $2,006 |
State and US medians are computed across all US ZIP codes with sufficient public-data coverage, from the same sources as the figures above.
Area data compiled from public government, academic, and industry research feeds. Data sources →
Common questions
- What is the median home value in ZIP 94027?
- $8.66M.
- What is the median sale price in ZIP 94027?
- $10.50M.
- How long do homes take to sell in ZIP 94027?
- Median days on market: 19 days.
- What is typical rent in ZIP 94027?
- Typical rent: $15,500/month.
- What is the natural-hazard risk in ZIP 94027?
- Overall risk: Relatively High (FEMA NRI, county-level). Top hazards: coastalFlooding, drought, earthquake, inlandFlooding, landslide.
- Is ZIP 94027 in a flood zone?
- High (FEMA NFIP). FEMA flood zone A14.
- What is the wildfire risk in ZIP 94027?
- Risk to homes is higher than 72% of US counties (USDA Forest Service Wildfire Risk to Communities, county-level).
- What is the radon potential in ZIP 94027?
- Moderate radon potential — EPA Zone 2 of 3, county-level. EPA recommends testing every home regardless of zone.
- Are there Superfund sites near ZIP 94027?
- 1 current or proposed National Priorities List site within 5 miles (EPA). Nearest site: Hewlett-Packard (620-640 Page Mill Road), 4 mi.
- How many schools serve ZIP 94027?
- 4 schools (4 elementary) (NCES, 2022-23).
- Is ZIP 94027 walkable?
- Walkability index: 8.2/20 (EPA Smart Location Database).
- What is the air quality in ZIP 94027?
- Good. Median AQI: 31. (EPA AQI).
- What is the cost of living in ZIP 94027?
- Regional Price Parity: 113.3 (100 = US average) (High) (BEA RPP, metro/state-level).
Nearby ZIP codes
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Data last updated
Most recent source refresh: Sep 2026. See all data sources →